Pre-heat grill to 450°F.
In a small bowl, combine rub ingredients.
Bring steak to room temperature.
Brush all over with oil and rub spice
mixture into steak.
Grill 15 minutes or
until internal temperature reaches 130°F.
Place on a cutting boar
d and allow to
rest 10 minutes before slicing.
While steak is cooking, combine
blackberries, serrano pepper, celery, and
sugar in a mixin
g bowl.
Carve steak thinly, across the grain, at a
45° angle. Top with blackberry salsa.